All I know is they were able to show me the screenshot wherein I asked him if he was 'mjmantis' which was the initial username of the user I was interacting with.  The username later changed to minerjones.  Luckily, Android telegram does not auto-delete you from the chatroom like iOS and macOS do.

Here is a picture.



To be clear, I'm not implying that this is a user on this forum or anything like that.  I am just sharing what happened in hopes to help others in the future.  Because I do have this android phone which I actually don't really use, I will be able to preserve this and provide it to authorities here.

I wish everyone the best of luck and a happy new year!